下面这句话存在语法错误,请问如何改正?（保留大体结构,做局部修改.）

题目

下面这句话存在语法错误,请问如何改正?（保留大体结构,做局部修改.）
Once heavily influenced by this phenomenon, which will appear a series of serious effects that many business and factory closings and job losses. 此句翻译：一旦被这一现象严重的影响,会出现一系列的严重的影响,以至于许多工厂和公司会***,工人会下岗.

答案

Once heavily influenced by this phenomenon, there will be a series of serious effects that many business and factory will close and many workers will lose their jobs.